From: Christoph Lameter <cl@linux.com>
Date: Mon, 7 Apr 2014 22:39:43 +0000 (-0700)
Subject: vmstat: use raw_cpu_ops to avoid false positives on preemption checks
X-Git-Tag: v3.15-rc1~57^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=293b6a4c875c3b49853bff7de99954f49f59aa75;p=pandora-kernel.git

vmstat: use raw_cpu_ops to avoid false positives on preemption checks

vm counters are allowed to be racy.  Use raw_cpu_ops to avoid the
local_irq_disable overhead and to avoid preemption checks which will be
added to the __this_cpu operations.

[akpm@linux-foundation.org: Add comment.  Again.]
Signed-off-by: Christoph Lameter <cl@linux.com>
Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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